Have my Plastic King project going pretty good now. Have drivetrain from early style PK in it and changed the steering to left side just like older ones to make the steering work and be out of way of drieline. Flipped the rear-end to have go in right direction with engine turned around now from orig set-up. Brakes and clutch on left side by steer coulumn and will have a wide two-person seat in future with driver on the left of tunnel, not in center. Have most of wiring in not shown in pix. will need to get batt mounted and gas tank to try start and drive, see if it works! I ended up using much of the orig body panels as they seemed to be workable with mods fairly easy. Here's a few shots. I have more on Yahoo PK forum if you wanna look. Not sure what color to paint, but looking at Gold (yellow) with red wheels and grill like MM! Maybe a nice deep red like Massey Fergs, but like the MM idea best.

Looks like you're deep into it, and it's looking very good! Either paint scheme will look very nice, and while you can't go wrong with red, the MM gold would set it apart.....and it would still have red wheels!

Well, got a choke and throttle cable on it and filled the gear oil areas and took it for a drive. Was sitting on that flat stock way back over the axle, no seat pan on it. Clutch worked good mostly and all the gears and not a noisy trans. I do seem to have something hitting in clutch when it is idling and not pressed. Just touch pedal it it quits. Seems almost like the three clutch release arms are hitting something. Noise gets faster beat when throttled up. I didn't drive the two pins holding the yoke in all the way tight. They stick out some, seemed they weren't gonna go in any more. Wondering if those arms could hit on them, and when touch pedal, get tilted away enoug to stop noise?? Now gotta get a gas tank for it and decide if I"m gonna use the fender panel or make my own wooden body section for on back.

Hopefully, it doesnt end up being something major. The pins are a good candidate for something like that.
Just a thought. Did you replace the throw out bearing? I've had bearings in old tractors that will do near what you're describing and the bumping /noise went away when replaced.